STGPROC is a computer program designed to meet a need in the social sciences for a computing system that (1) can handle character strings of open-ended data, (2) does not require predefinition of the data, and (3) can handle variable numbers of responses per respondent. The purpose of this monograph is to allow the researcher to judge the utility of STGPROC and its value for his specific research needs. In the general presentation, no knowledge of computing procedures is assumed. The monograph provides the researcher with a general idea of how STGPROC operates and how it differs from existing programs in the social sciences. The STGPROC system of transcribing data is detailed and ways to utilize the program are explained. The researcher with no programing experience should be able to explain to a programmer any additional operations that he needs. For those with some programing experience, the main STGPROC program and its existing subroutines are reproduced, along with comment cards, in an appendix. (DE)