The WARMreader macros can be used to read data for marked-points from files having other formats. For a given format one needs to specify `data-start' and `data-end' strings, as well as patterns to be used with macros to extract the necessary components of the bounding-box and the lines of marked-point data. Stripped-down versions of these patterns are also needed, to help determine when a line does not match what is required. Also required is a token list, to hold the expansion part of a TEX macro to interpret the data which matches the supplied pattern. This macro must store the data appropriately for later use. Finally, there must be a TEX macro that controls the order in which the various steps are performed; i.e. reading the data file with the appropriate pattern to interpret each data line. For more specific information on what is required, consult the file WARMreader.sty.4