You can have certain symbols insert with switch position text, terminal pin numbers, or BOM catalog numbers prefilled with default values.
For example, let's say that you always want your N.O. limit switch symbol to insert showing the two terminal pin numbers labeled as "1" and "2." In AutoCAD, call up and edit these symbol files: HLS11.DWG, VLS11.DWG, HLS21.DWG, and VLS21.DWG (modify both the jic1 and jic125 versions). In each case use DDEDIT to change the TERM01 and TERM02 attribute default values to be "1" and "2" respectively. At insertion time, these values show up as defaults.