According to SW Help 2013, there isn't a file location for Drafting Standards.
What I did was to start with a base standard, in our case, ANSI, from the drop down list.
Then all settings in "Document Properties" were adjusted to meet company standards.
Once completed, save with meaningful name: NBC-ANSI_12Txt.sldstd in a network directory.
Using File Locations, point to the directory.
Lastly, call up all necessary templates, and save with appropriate standard activated.
I have two for drawings; one with .12in text and another with .09in text,
...another for models (parts & assemblies) with .16in text.