Picking in HIGZ pictures

           +--------------------------------------------------+
           | CALL  IGPICK (NT*,*X*,*Y*,NBLEV*,NAME*,ID*,CHOPT) |
           +--------------------------------------------------+
                                  
Action: This routine allows to return the level number, the name and the identifier of a picked primitive. Parameter Description:
NT
Normalization transformation
X, Y
Cursor position
NBLEV
Number of levels
NAME(NBLEV)
Names of the primitives
ID(NBLEV)
Identifiers of the primitives
CHOPT
Character options (Not used at present)
In addition it is possible to get information via the common QUEST.
IQUEST(60)
Adress of the picked primitive in the bank NT. If IADR=0, nothing has been picked.
IQUEST(61)
Primitive type
6
IGHIST
7
IPM with one point
8
IPL with two points
9
IPL
10
IPM
11
IFA
12
ITX
13
IGBOX
14
IGFBOX
15
IGARC
16
IGAXIS
17
IGTEXT
18
IML
20
IGTABL
By default the level 0 is the Normalisation transformation level.