labelWidget label; interactive widgets also use it for ID generation. A ## suffix can distinguish IDs without displaying the suffix.
flagsImGuiTableColumnFlags options controlling this operation; combine compatible flag bits with |.
init_width_or_weightInitial pixel width for fixed columns or relative weight for stretch columns; 0 uses automatic sizing.
user_idInteger identifier for the item, storage entry, or column, rather than a display index.
Declare a table column and configure its label, sizing policy, and behavior.