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# Data Update Functions

These functions change the data in fields.

lrvtc.retrieve_messages1 and lrvtc.retrieve_row change data as a side effect of popping data from the first row. They change data by shifting data up by a row. lrvtc.rotate* functions move data from the top to the bottom of the table.

Function | Description
--- | ---
lrvtc.clearColumn | Clears all data in a column.
lrvtc.clearMessage | Clears the data in a field.
lrvtc.clearRow | Clears the data in a row.
lrvtc.increment | Increments a counter stored in a field.
lrvtc.retrieveMessage | Pops the first field from a column.
lrvtc.retrieveMessages1 | Pops the first fields from specified columns.
lrvtc.retrieveRow | Pops the first fields from all columns.
lrvtc.rotateMessage | Retrieves the first field from the specified column and moves the value to the bottom.
lrvtc.rotateMessages1 | Retrieves the first field from the specified column and moves the value to the bottom.
lrvtc.rotateRow | Retrieves the first row and moves the values to the bottom.
lrvtc.sendIfUnique | Sets the last field of a column to a value if the value does not exist in the column.
lrvtc.sendMessage | Sets the last field of a column to a value.
lrvtc.sendRow1 | Sets the data in multiple columns.
lrvtc.updateAllMessageIfequals | Replaces a value in the specified columns.
lrvtc.updateMessage | Replaces the data in a field.
lrvtc.updateMessageIfequals | Replaces the data in a field if the current data equals a given value.
lrvtc.updateRow1 | Replaces the data in a row.

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