SYNTAX : HELP FUNCTION : The function is identical to the single command :H which is: displaying the current position in the file (both . and Z and the percentage) and the currently active control-functions (CTRL_C, CTRL_G and CTRL_T). This is one of two methods for keeping track of progress of a large sequence, the other being the CTRL_T function. NOTE : This function is only available on the HELP-key. MATRIX