Final Position Numbers

The general idea is that the user does not set any position number in the modelling phase (and thus indirectly not any part names). These are supposed to be set later on when the modelling work is completed (by autopos) and maybe even only after the break down to assemblies has been made. Thus normally all position numbers are zero right after modelling.

Even if the position numbers have been set, either directly by the user, or by a previous run of autopos, these position numbers may be overwritten in the new run (there are different options available to handle this situation as described in later sections of the autopos documentation).

However, there is an option to indicate that certain position numbers are "final" in the sense that they must not be changed, neither by the modelling not by the autopos function. Position numbers are identified as final by a combination of certain prefixes and suffixes of the position numbers, that means, final position numbers must be alpha-numerical.

The suffixes and prefixes identifying position numbers to be final are assigned to two default parameters of the default file of Hull Planar Modelling (from where they are read also by the autopos function). The parameters are POSNO_PREFIX and POSNO_SUFFIX and they may be assigned a number of different strings, for example,

POSNO_PREFIX=A,B,K

POS_SUFFIX=HAI

To be identified as "final" a position number must (in this case) have a prefix equal to any of A, B or K and simultaneously have a suffix string equal to HAI.