Bob, on number one you are right on, I would not use white out to change a print or document without some notation and sign off near it.
One number two I think you might have just failed basic Sunday School, it is always illegal, getting caught has nothing to do with it.
This above is meant in a light hearted way, the written words look mean, when I just re read them, always a problem with e-mail, the tone is missing. You speak a lot of sense here, I value you contributions and have learned much from your posts - thanks!
In a persnickety sense, Bob is partly right, Caster is partly wrong:
Getting "caught" doesn't make it illegal - that's only an allegation. Even a "guilty" plea doesn't make it illegal until a court of competent jurisdiction either accepts the guilty plea or finds one guilty.
Caster is partly wrong - it is not ALWAYS illegal, it's only illegal if there is an existing law against it. I just did a quick scan and couldn't find any LAWS (lots of "suggestions" and some regulations, but the regulations merely declare the document invalid, not a charge against an individual
(although some civil liability may face the individual who did the white out IF he/she is ever identified. But the whole point against white out is that it is anonymous when it isn't initialed.) Even in a patent case, it's not illegal; it just won't be given the same weight in evidence as a change made in the way laid out earlier in the thread: single line cross out, leaving the original still legible, dating and initialing the change (plus witnesses or approvers.)
To think: I used to spend HOURS every week niggling over minor points like this to assure our contracts and processes were as "bulletproof" as possible to stay out of court.
The one crime it is NOT - forgery. (Forgery has lots of definitions - modified by various courts in various jurisdictions. - The basic essence of forgery is INTENT to defraud. Most of these whiteout situations are without intent to defraud - mostly it is ignorance or laziness.)
Here's an old definition from Black's Law Dictionary:
The making, drawing, or altering a document with the intent to defraud. A signature made without the person knowing of or consenting to it.