No CAPS When You Spell the Framework’s Name

MF DOOM is one of the greatest lyricists (rap or otherwise) that you’ve probably never heard of. In his 2004 track “All Caps” with Madlib, DOOM states that his stage name should be written in all caps.

All CAPS when you spell the man’s name.

MF DOOM, 2004

The preferred capitalization of OpenSees is not so clear. I often see OpenSEES, which is understandable because it stands for the Open System for Earthquake Engineering Simulation. Less frequently, I see the all caps OPENSEES, the single capital Opensees, the txtese opensees, and the hyphenated Open-Sees. Folks often ask me which capitalization is correct.

The answer to this question lies in Tcl, the first scripting language OpenSees used for model building and analysis. The Tool Command Language, has always been capitalized Tcl instead of TCL. So, when G3 became OpenSees, the development team decided to use the same capitalization pattern for System for Earthquake Engineering Simulation that is used for Tool Command Language.

The correct capitalization is OpenSees, with no repeated capital letters or hyphens.

I’ll leave this here for you to enjoy while you do some case sensitive searching and replacing.

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