-If the input line starts with '>>> ', this prefix and any trailing spaces
-(including line feed) are removed. The reminder is processed with Perl's
-string eval() function, effectivly evaluatiing escape sequences like
-'\x41', or '\r'. If you need a line feed there, you need to encode it
-according to your needs.
+If the input line starts with ':<cmd>:', this prefix is removed and the
+line is processed by the runtest script before sending. The following
+commands are recognised:
+
+- "eval": process the reset of the line with Perl's string eval()
+ function. This can be used to send arbitrary data by encoding it as
+ escape sequences (e.g. "\x41\101"). If you need a line ending, you have
+ to append it accordingly (e.g. "\r\n").