You can set the PL/I Editor as the default editor for COBOL file types, click . This allows you to open a file with the associated file type by double clicking the file and it will open in the PL/I editor.
You can control several aspects of the appearance of files in the editor by using the following Editor Presentation toolbar buttons:
Toggle Block Selection
Mode enables you to select a block of text. Enabling block
selection changes the editor font to a fixed-width font.
Show Whitespace Characters displays
a small dot for white-space characters and a paragraph mark for end-of-line
markers.
Toggle Mark
Occurrences highlights all occurrences of the current
selection.
Toggle Hex Editing displays
the text in hexadecimal.