Edit postprocessor snippets

I have some problems, to modify postprocessor(Linuxcnc) to my needs. Following snippets needed to do the settings:

.Program start
.Before first tool
.Before following tools(except first)
.On first tool change
.On toolchange (except first)

And there is still this Z-movement before first toolchange, on line 3. No idea from what setting this comes from. This unwanted and risky.