Technical Writing: Proper use of i.e. ('that is') versus e.g. ('for example')

Technical Writing: Proper use of  i.e. ('that is') versus e.g. ('for example')

Ever wonder whether to use 'i.e.' or to use 'e.g.' in a technical document? I have. So I thought I'd post this to help anyone else who may have wanted to know the distinction.

Here is the proper use of  i.e. ('that is') versus e.g. ('for example'):

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'I.e.' (id est, 'that is') precedes a statement of amplification or explanation. 

Examples of usage:

"Reboot the computer (i.e., press the Control, Alt, and Delete keys simultaneously)."

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'E.g.' (exempli gratia, 'for example') precedes a specific example or examples. 

Examples of usage:

"Several groups attended, e.g., the church association, the PTA, and the teachers' union."

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In many contexts, to avoid confusion, the long version use of 'for example' or 'for instance' can replace the abbreviated 'e.g.' or 'i.e.'.