this is and ampersand......&
It means congruent. It is NOT 'approximately equal', which would be an equal sigh where BOTH lines are squiggly.
Draw a squiggly line under the 0.
The squiggly line in music notation is called a trill. It indicates that the musician should rapidly alternate between the written note and the note above it.
It is a line that twists and turns, not astraight line.
/\/\/\/\/\/\/\/\/\/\/\/\/\/\ is the line
If you mean the n with a squiggly line on top, it's pronounced en-yay.
I drew a squiggly line.
The word is mispelledA RED squiggly line means the word is misspelled. A GREEN squiggly line means that there is one or more extra space or tab characters that aren't grammatically needed.
It is in fact not a squiggly line.. But a small outline of the state. This is done to combat counterfeitting and also as a tracking method.
parall
A number of computer programs and phone apps have built in spell-checkers. If the word you have used is not one which the computer/phone recognizes, it marks it with a squiggly red line. This does not necessarily mean that you have spelled the word wrong: it could be a proper noun, or a slang word, or a spelling which is not used by the geek who created the program. The squiggly line is only an alert; you must decide if the word actually needs changing.