7.2.5 Inquiry etc

lwdatr = NumRu::DCL.swqwdc() Inquires the capability to vary line width.
lclatr = NumRu::DCL.swqclc() Inquires the capability to vary line color.
ltnatr = NumRu::DCL.swqtnc() Inquires the capability for HARD FILL.
limatr = NumRu::DCL.swqimc() Inquires the imaging capability.
lptatr = NumRu::DCL.swqptc() Inquires the pointing capability.
cfname = NumRu::DCL.swqfnm(cpara) Inquires the file name of various databases.
wsxmn, wsxmx, wsymn, wsymx, fact = NumRu::DCL.swqrct() Inquires the maximum frame area.
NumRu::DCL.swsrot(iwtrot) Specifies the rotation of the screen.