(c) [0x1] Software & Consulting GmbH, 2017 | Version 2.0 | November 16th 2017
16.2 Image naming when using LPE
By default the expression for a canvas will be represented in the file name like this: filename_LPE#.ext. If you want to give the resulting image a meaningful name, you can use the following syntax in the LPE field of the Render Settings: meaningfulName:LPE. The resulting file name will be filename_meaningfulName.ext