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No arguments accepted.
This procedure returns the version of Rigi in a formatted string.
The version number of Rigi is returned in a string formatted as: major.minor.revision. For example, if this is the fifth major release, fourth minor release, second revision, a call to this procedure returns "5.4.2". The subfields are constrained to a single digit.
# Convert the version number to a three-digit integer.
# Note that all subfields in the version number are
# single digits.
scan [rcl_version] "%d.%d.%d" major minor release
set vnum [expr
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