Name
xlsx.IsColumnHidden -- get column visibility state
Synopsis
hidden = xlsx.IsColumnHidden(id, col[, sheet])
Function
This function returns True if the column at index col is currently hidden or False if it is visible. Column indices start at 1. Optionally, you can also pass the index of the worksheet to use in the optional sheet parameter (starting from 1 for the first worksheet). If the sheet parameter is omitted, the worksheet set by xlsx.SetDefaultSheet() will be used.

Inputs
id
identifier of the XLSX document to use
col
column index to use (starting from 1)
sheet
optional: index of the worksheet to use (defaults to the index of the default worksheet)
Results
hidden
True if the column is hidden, False otherwise
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