.otln

File Type Generic IconOpal Outline File
File Format Proprietary (A Sharp)
Usage Open manually
Rank ★ ★ ☆  Average
Description

Outline created by Opal, an outlining program for Mac OS X; creates hierarchical lists for organizing notes, projects, reports, ideas, etc.; Opal is the successor to Acta and has been completely rewritten for Mac OS X.

More information is available at the Opal Product Page.

Open With
macOS

IconA Sharp Opal

Updated 2007
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