After doing any modifications in the displayed data (NOT the formatting), you will have a new red button show up to let you save to File
You can also change the values of columns part of a Multi Columned primary Key as DMC stores the original values for each modified record and searches those values when saving to File
ie : a Table with a primary Key on column ID and NAME and EMAIL for example will let you change one or all of the values in those columns (as well as others of course)
table values are originaly :
ID = 25
NAME = 'JONES'
EMAIL = 'sales@dmc-fr.com'
DMC will store all these values in a temp Q and if you change NAME to 'JAMES' and EMAIL to 'support@dmc-fr.com' then those NEW values will also be stored in the same temp Q
When you perform the save to File process , DMC will search in the table for the ORIGINAL values and UPDATE the found record with the NEW values
This is possible on any Primary KEY containing a maximum of NINE COLUMNS

Click on it and all modifications will be saved to your File (IF the table is not compliant to DMC standards then you will NOT be able to do so and a message will inform you of this)
A confirmation message will popup to let you carry on or not
At the end of this process if your are working on DAT Tables , the BUILD KEY's process will be automatically started to avoid problems accessing the tables at a latter stage.