Information guides
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to information guides and is useful, in particular, but not exclusively, for quick-reference booklets which may be employed, for example, to provide information relating to computer software or to any of a large variety of different subjects. Thus, the invention is useful, for example, for quick-reference software manuals. 
     2. Description of the Related Art 
     Information guides are generally provided in the form of books or other guides, which are usually provided with tables of contents and indexes for guiding the user to particular items of information, and the information text within such books may be divided, in a conventional manner, into chapters or other sections, each relating to a particular part of the subject matter of the book. 
     When it is desired to direct a reader from a first portion of the text of the book to a second portion, for example to obtain further and more detailed information with respect to the first portion, then it is usual to do so by directing the reader from a first page to the number of the page on which the second portion of information appears. The user is then required to hunt through the book until the relevant page is found, which may be a time-consuming and confusing operation, and may cause the user to lose the first page. 
     It is also well known to provide an index in the form of tabs at the right-hand sides of files and books, to facilitate the finding of information identified by the tabs. However, with this arrangement, the amount of space available on the tabs for identifying the items of information is usually very restricted and, with many tab arrangements, it is not possible to provide such information on the rear sides of the tabs. 
     BRIEF DESCRIPTION OF THE INVENTION 
     According to the present invention, there is provided an information guide which comprises a plurality of leaves secured to a backing sheet, along fold lines formed in the leaves, the fold lines being parallel to one another and spaced apart from one another and the leaves being turnable about the fold lines from first positions, in which the leaves lie in a mutually overlapping relationship on the backing sheet, to second positions, in which the leaves extend upwardly from the backing sheet. The leaves have information text on opposite sides of the leaves and also have marginal portions each having a first side which is exposed to view when the leaves are in the first positions and a second side which becomes exposed to viewer as the leaves are turned about the fold lines from the first positions to the second positions. Identifying markings on the marginal portions identify the subject matter of the information text appearing on respective ones of the leaves. 
     With this arrangement, the user can readily view the identifying markings on the first sides of the marginal portions of the leaves, when the leaves are in first positions and, therefore, can readily and immediately select one or more of the leaves to be turned about the fold lines from the first positions in order to expose the relevant portion of the information text. Subsequently, when some or all of the leaves have been turned in this way to the second positions, the identifying markings on the second sides of the marginal portions of the leaves can readily be viewed, for rapid and easy selection of another portion of the information text. 
     The identifying markings preferably comprise color coding and identifying text, corresponding color coding being provided in the information text, so that the reader can be readily referred, by the color coding in the information text, to an appropriate one of the marginal portions and, thus, to the portion of the information text identified by the identifying text in that marginal portion. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     Further features, objects and advantages of the present invention will be more readily apparent from the following description thereof when taken in conjunction with the accompanying drawings, in which: 
     FIG. 1 shows an information guide according to the invention, in a partially opened condition, in a perspective view; 
     FIG. 2 shows a plan view of the information guide of FIG. 1 in an opened condition; 
     FIGS. 3 and 4 show two views in perspective of the information guide of FIGS. 1 and 2 in a closed condition; and 
     FIG. 5 shows and enlarged view of a color codes portion of information text. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
     As shown in the drawings, an information guide in the form of a quick reference computer manual9 is indicated generally by reference numeral 10, and has a front cover 12, a rear cover 14 and an intermediate spine portion 16 connecting the front cover 12 to the rear cover 14. 
     The front cover 12 is provided with a set of leaves 20a-i, which are secured to the front cover 12 by an adhesive (not shown). The leaves 20a-h can be turned relative to the cover 12 about fold lines 21a-h, whereas the leaf 20i is secured by adhesive to the front cover 12. 
     The fold lines 21a-h are spaced apart from one another and are parallel to the top and bottom edges 19a, 19b of the front cover 12. 
     At their edges remote from the fold lines 21a-h, the leaves 20a-h have marginal portions 22a-h extending across the entire width of the leaves 20a-h and the leaf 20i likewise has a marginal portion 22i extending across the entire width of the leaf 20i. The leaves 20a-h are all of the same size. The fold lines 21a-h of adjacent pairs of the leaves 20a-h are spaced apart by a distance h1 (FIG. 2), measured transversely of the fold lines, which is equal to the height h2 of the marginal portions 22a-j. Consequently, when the leaves 20a-h are folded or turned downwardly onto the leaf 20i, so that the leaves 20a-h lie in a mutually overlapping shingled relationship on the cover 12, first or upper sides of the marginal portions 22a-j are exposed to view. 
     Thus, as shown in FIG. 2, in which the leaves 20d-h are shown in the first positions, the first or uppermost sides of the marginal portions in the first positions are all clearly visible to the user. 
     As the leaves 20a-h are turned relative to the cover 12 about their fold lines 21a-h, through slightly more than 90°, the opposite or second sides of the marginal portions 22a-h become exposed to view as illustrated in FIG. 1. As the leaves 20a-h are turned further in the same direction, they eventually come to lie in another mutually overlapping superimposed or shingled relationship substantially parallel to the cover 12, with the second sides of the marginal portions 22a-h fully exposed to view. 
     As shown in FIG. 2, the leaves 20a-c have been turned from their first positions into their second positions, while the leaves 20d-h remain in their first positions. 
     Information text, indicated generally by reference numeral 24, is printed on the opposite sides of the leaves 20a-h and on the uppermost side of the leaf 20i. In the information text 24, first portions of the text are enclosed in reference markings in the form of color blocks 26. The color blocks 26 and the marginal portions 22a-j of the leaves 20a-i are color coded, the arrangement being such that the color blocks 26 are associated with first portions of the information texts, and the marginal portions 22a-i are associated with second portions of the information texts which each provide further and more detailed information corresponding to the correspondingly colored first portions. Therefore, a user reading one of the first portions of the information text, and requiring further information relating to that first portion, can quickly and easily locate the correspondingly colored marginal portion 22a-a and, then, can raise the corresponding leaf 20a-h so as to reveal the appropriate second portion of the information text containing such additional information. 
     More particularly, and with reference to FIG. 5, which shows one of the color blocks 26 in greater detail, it will be seen that the color block 26 includes, at its right-hand end, a rectangular blank space 27, with a marking in the form of a short horizontal line 29 projecting into the blank space 27 at the left-hand side of the blank space 27. 
     The purpose of the line 29 is to provide a visual indicator for guiding the user to the approximate location, on the corresponding leaf, of the required additional information. If the line 29 is positioned near the top of the blank space 27, then it indicates that the required additional information is near the top edge of the corresponding leaf. Likewise, if the line 29 is near the bottom of the blank space 27, then the required information is near the bottom edge of the corresponding leaf. 
     The marginal portions 22a-a are also provided with identifying texts 28, which identify the subject matter of the information text on the corresponding leaves. Thus, both the identifying texts 28 and, also, the color coding of the marginal portions 22a-a identify the subject matters of the associated portions of the information text 24. The identifying texts 28 thus serve as titles for the associated portions of the information text. 
     The color coding on the first sides of the marginal portions 22a-h comprises a set of different colors, and the color coding on the second sides of the marginal portions 22a-h comprises the same set of colors. The colors are arranged on the marginal portions so that a pair of such portions, each having the same color, are provided on mutually opposed sides of each adjacent pair of the leaves 20a-i. Thus, for example, referring to FIG. 2, it will be seen that the adjacent pair of leaves 20c and 20d have, on their mutually adjacent sides, the marginal portions 22c and 22d which have the same color and, also, which have the same identifying text 28, which in the present embodiment is the wording &#34;OPENING AND CLOSING&#34;. 
     The rear cover 14 forms a backing sheet for a second set of leaves 20j-r, which are secured to the rear cover 14 in a manner similar to the above-described manner in which the leaves 20a-a are secured to the front cover 12. Likewise, the leaves 20j-r are provided with marginal portions 22j-r, which are color coded and which bear identifying texts 28 in a manner similar to the portions 22a-i. 
     As can be seen from FIG. 1, the uppermost side of the leaf 20j, when the leaf 20j is in its first position, in which it is shown in FIG. 1, has no color coded marginal portion, and the stone applies with respect to the leaf 20a. 
     Likewise, since the undersides of the leaf 20i and 20r are secured by adhesives to the covers 12 and 14 respectively, these undersides of these leaves are also not provided with any color coded marginal portions, identifying text or information text. 
     The color coding of the marginal portions 22j-r is different from that of the marginal portions 22a-i, so that the information text color coding 26 can be used to refer the user from one of the leaves 20a-20h to one of the leaves 20j-20r and vice versa. 
     As will be apparent from the above description, the present guide requires no page numbers, glossary, index or list of chapters. Further, the present guide does not require the user to begin at a first page and read further, as is customary with a conventional book, but readily enables the user to view immediately all of the identifying texts, before turning any one of them, and to select any of the leaves to commence reading of the information text. 
     As will be apparent to those skilled in the art, modifications may be made in the above-described information guide within the scope and spirit of the appended claims. For example, the guide may comprise a single set of leaves on a single backing sheet, or may comprise three or more sets, each on a respective backing sheet, with the backing sheets connected to one another. Also, while the fold lines extend from side to side across the backing sheets in the illustrated embodiment, they may alternatively extend from top to bottom of their backing sheets. The leaves need not be rectangular but may, for example, be hour-glass shaped or circular. The fold lines may be creased, scored, serrated or formed in any other suitable manner.