In flex PCBs, solder mask is applied by using a Coverlay layer. Coverlay is a flexible polyimide material that is first drilled, routed or punched at the locations where clearances are required.
Result attributes will report how many features have been assigned to each layer type.
The report will specify how many features have been sent to each layer type. The report will also specify the parameters that the DFM was run with.
Below is a sample report, given in text format.
Assign clearances to : drill, laser, rout, punch
Unassigned shapes go to: *.none
If NC layers exist : Overwrite layer
Pocketing tool diameter : 0.017 inch
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Action : Coverlay tool creation
5 clearances assigned to layer clt.drl
1 clearances assigned to layer clt.laser
11 clearances assigned to layer clt.rout
0 clearances assigned to layer clt.punch