Load case calculations

These POST1 commands are used for combining results from different load steps.

Mapdl.lcabs([lcno, kabs])	Specifies absolute values for load case operations.
Mapdl.lcase([lcno])	Reads a load case into the database.
Mapdl.lcdef([lcno, lstep, sbstep, kimg])	Creates a load case from a set of results on a results file.
Mapdl.lcfact([lcno, fact])	Defines scale factors for load case operations.
Mapdl.lcfile([lcno, fname, ext])	Creates a load case from an existing load case file.
Mapdl.lcoper([oper, lcase1, oper2, lcase2])	Performs load case operations.
Mapdl.lcsel([type_, lcmin, lcmax, lcinc])	Selects a subset of load cases.
Mapdl.lcsum([lab])	Specifies whether to process non-summable items in load case
Mapdl.lcwrite([lcno, fname, ext])	Creates a load case by writing results to a load case file.
Mapdl.lczero(**kwargs)	Zeroes the results portion of the database.
Mapdl.rappnd([lstep, time])	Appends results data from the database to the results file.