there are many undocumented commands. i found some by looking at other people's scripts and looked them up on the forum. if you search there, you will stumble upon some explanations.
we could collect them here and add description, so Florian would only need to copy and paste them into the oficial documentation if we do a good job.
i found expanation for this command here:
moveline to empty line fails
as far as i understand
findinline 1 1
&
findline 1 1
prevent the script to terminate (producing an "" ouput for into the current tag field and stopping there) when it does not find the string it is looking for. instead the parser goes to the end of the line for <findinline 1 1> and to the end of the site (i think) for <findline 1 1>.
i use the <1 1> almost always with and as it prevents scripts from error stops.