: It is based on the Open XML standard and is essentially a compressed folder containing XML documents and a macro layer. Potential Origins of "mors.xlsm"
An .xlsm file is a spreadsheet that supports embedded automation scripts. mors.xlsm
: Unlike standard .xlsx files, .xlsm workbooks can run custom scripts (macros). : It is based on the Open XML
"MORS" is often an acronym in professional contexts. Depending on where you acquired it, this file might be: this file might be: