Include command is shown as 'This command not available' in the Command Finder for NX 1899.
Solution
The Include command was not to be listed until NX 1926 with the new sketch solver. Add Curves to Sketch is the command to use in the NX 1899 series.
Notes and References
Hardware/Software Configuration
Platform: all
OS: n/a
OS Version: n/a
Product: NX
Application: DESIGN
Version: V1899
Function: SKETCHER
Ref: 001-10146240