| Variable | usage |
| $ | block array loop variable to facilitate array operations |
| $$ | the selected toolbar or menu number |
| $CMD_LINE | has the full command if HicEst was started via command line |
| $CR | carriage returncontrol character, same as CHAR(13), same as Ctrl+M |
| $LF | line feedcontrol character, same as CHAR(10), same as Ctrl+J |
| $CRLF | carriage return line feed control character combi, same as CHAR(13)//CHAR(10) |
| $TAB | tabulatorcontrol character, same as CHAR(9), same as Ctrl+I |