Index for book or ledger - has width of relevant page groups increased from upper to lower by width of group tab index along edge

摘要

The indexing system comprises main groups of information contained within several pages, these depending on the amt. of information in each main group. These pages, for all main groups, are bound into a suitable protective cover. The information in each group is indexed by tabs along the page edges. These tabs run from top to bottom and comprise cut-outs of decreasing length along the sides. Coloured tabs provide further classification and each group has its page width increased by the width of each group tab index, from the upper to the lower.