LOG_BEG

Purpose:        Log start of activity

Input Syntax:   LOG_BEG <hidden> <number> <mnemonic> <activity>

Input Params:   hidden   INT       = hidden activity (boolean)
                number   INT       = numeric activity identifier
                menmonic CHAR(32)  = activity identifier (string)
                activity CHAR(256) = activity information

Output Syntax:  [+|-]<message>

Output Params:  message  CHAR(128) = human-readable message

Right required: none

Implementation: log.c / f4adp_log_begin()
