Tandy 1000 Basic Reference Manual page 300

Chapter 10 I
BASIC Keywords
RSET
Statement
RSET
field name
=
data
Sets
data
in
a
direct access buffer field name in preparation for a
PUT statement.
Field name is a string variable defined in a FIELD statement.
This statement is similar to LSET. The difference is that with
RSET, data is right-justified in the buffer.
See LSET for details.
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