Abstract: A paper records filing system comprised of a multiplicity of pre-numbered and pre-categorized hanging file folders organized into three categories of documents: 1) documents for which a plurality of valid instances may exist at any given time, and for which each valid instance has an indeterminate useful life, 2) documents for which a single instance may exist at any given time, and for which each valid instance has an indeterminate useful life, and 3) documents for which a plurality of valid instances may exist at any given time, and for which each valid instance has a limited useful life. File folders are reused as new instances of documents are placed in pre-categorized hanging file folders replacing obsolete documents previously filed in the reused hanging file folder. Obsolete documents may become obsolete either because of the passage of time makes them obsolete or the generation of a new instance makes them obsolete.

Abstract: A method of modifying a display matrix in a matrix display area in a window on a computer display screen. The method includes the steps of displaying data in a matrix format, thereby forming a display matrix in the matrix display area, the matrix display area having a first dimension, and increasing, responsive to a selection of an increase activator, the number of existing columns of matrix cells in the display matrix by adding an additional column of matrix cells to the display matrix. The method further includes the step of computing, using a central processing unit, a computed width of a column of matrix cells in the existing columns of matrix cells if the column of matrix cells is reduced in width to accommodate the additional column of matrix cells.