The-Glance-GUI.md

@@ -27,6 +27,24 @@ The basic tab lets you load files, examine variable data and attributes in those
 
 ![gui-basic](uploads/ed47353831150d460827ac4308b0ccd7/gui-basic.png)
 
+**To load files:**
+* click the "Load" button next to one of the two file sections (A or B)
+* navigate to the file you want to open in the pop up window and select it
 
+The file you selected should load into the basic tab and look something like this:
+
+![loaded-file](uploads/0487fcd021d64e957a61e00a3b041a5d/loaded-file.png)
+
+The file path, an automatically loaded variable, the data shape, the variable attributes, and the automatically detected fill value will populate into the appropriate areas. 
+
+**If you need to override the fill value:**
+* check the "override fill value" checkbox
+* type in the fill value you want to use
+
+Note: The fill value can be a number or "None" (without the quotes). If you set the override fill value to None, no data will be considered fill data. 
+
+If you uncheck the "override fill value" checkbox Glance will go back to using the fill value it automatically detected.
+
+![Screen_Shot_2021-10-05_at_9.50.45_AM](uploads/aae42f3d0b8a566e0e75cefd635014eb/Screen_Shot_2021-10-05_at_9.50.45_AM.png)
 
 TODO, this page is still in progress
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