How to create a vector from an existing matrix?

[DS_10024912]

How is the person in this video creating a vector from the matrix?    What key sequence is used to achieve this? 

https://youtu.be/Diq4hwvpPlw?si=SugsH3nFn_1xbJfR&t=34 

[DS_10024912]

Ctrl+Shift+C  --  Access Column

Ctrl+Shift+R --  Access Row

Press   [  (left square bracket)  to access an element in a matrix

[StuartBruff · Accepted solution]

Using the column operator.

type: data {ctrl-shift-C} n

Where n is the column number you want to select.

{ctrl-shift-R} n will extract row n. 

Stuart

https://support.ptc.com/help/mathcad/r10.0/en/?utm_source=mathcad/index.html#page/PTC_Mathcad_Help/row_and_column_operators.html