4gl pcode statement versions

I'm looking through the 4gl (version 6.0) reference manual's and came to some (for me) interesting new features. As my company has to mantain compatibility with several 4gl pcode versions (4.x and 6.x) I need to know when (that is in what 4gl pcode version) certain statements have first appeared. Specificaly I'm looking at: whenever error call error_function whenever warning call warning_function startlog() err_get() errorlog() get_fldbuf() field_touched() fgl_lastkey() fgl_drawbox() fgl_getenv() I know for example that in some 5.x database versions, the fgl_getenv function isn't available. As most of our clients still have 5.x database versions I need to know when the statements have appeared so that I know if they can be put in our programs. Thnx in advance Carlos ---- Carlos Costa e Silva < ccs@minimal.pt>