Add a new `def_field` interface, which instead of component, pointset, and mask ids uses names instead (would required additional interfaces that assign names to the respective instances. The ids could then be resolved by YAC during the `enddef`. This could solve an issue in ComIn, where currently plugins do not have access to the ids generated by ICON. Such fields could even be defined before the respective pointset of mask is even defined. If during the `enddef` the names cannot be resolved, an error has to be generated. @k202160 @k202215: What do you think?