Administration > Environment Variables > APTTBLCALSCOLWIDTHINT — Controlling Proportional Column Width Values in CALS Tables
  
APTTBLCALSCOLWIDTHINT — Controlling Proportional Column Width Values in CALS Tables
When CALS-format tables contain proportional width columns, the width for each column is stored as the colspec attribute of the associated table column. This value is represented as a decimal number (nn.nn). This allows for optimal column layout.
However, the CALS specification calls for the colspec value to be represented as an integer (nn). If your site has implemented this model, use these settings for the environment variable to specify the representation of the colspec value:
0 — (or not defined) stores the colspec value as a decimal number.
1 — stores the colspec value as an integer. If the original value of colspec is a decimal number, saving it as an integer simply deletes all values after the decimal point.
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HTML tables require that proportional column widths be specified as integers. Consequently, this environment variable is ignored when working in an HTML table.