Octave mode %numbers [1234 1234i 1234j] [.234 .234j 2.23i] [23e2 12E1j 123D-4 0x234] %strings 'asda''a' "asda""a" %identifiers a + as123 - __asd__ %operators - + = == > < >= <= & ~ ... break zeros default margin round ones rand ceil floor size clear zeros eye mean std cov error eval function abs acos atan asin cos cosh exp log prod sum log10 max min sign sin sinh sqrt tan reshape return case switch else elseif end if otherwise do for while try catch classdef properties events methods global persistent %one line comment %{ multi line comment %} MIME types defined: text/x-octave.