Single quotes on either side of text creates a string of the characters inside the quotes. Double quotes should be used for apostrophe usage inside of single quotes. Using the single quote after a variable to make row vectors into column vectors and column vectors into row vectors. Works with matrices as well, columns become rows and rows become columns. Lists the current variables, their sizes, and whether they have nonzero imaginary parts.
Variable names consist of a letter, followed by any number of letters, underscores or digits.
This means that you have plenty of characters to provide variable names that are sensible. Six months pass and you have been given the less than envious assignment of debugging this program. To view the matrix assigned to any variable, simply enter in the variable name. The most recent answer and the default variable name. The ans variable is created automatically when no output argument is specified.