NMRWish Built-In TCL Functions
gdbPrev: Find the previous entry in a GDB database.

Return the Nth elements in one or more linked lists:
gdbPrev handleList [N]
Notes:
1. The default value of N is 1, which returns the
adjacent element in the list.
2. Specifying the keyword 'last' for argument N
will return the last element in the list.
3. Use of a null (zero) handle as input will
return null without generating an error.

Frank Delaglio, Ph.D.