** Keyword search through the HELP entries. **

** LOOKFOR XYZ looks for the string XYZ in the first comment line **

** (the H1 line) of the HELP text in all M-files found on MATLABPATH. **

** For all files in which a match occurs, LOOKFOR displays the H1 line. **

** **

** **

** For example, "lookfor inverse" finds at least a dozen matches, **

** including the H1 lines containing "inverse hyperbolic cosine" **

** "two-dimensional inverse FFT ", and "pseudoinverse". **

** Contrast this with "which inverse" or "what inverse", which run **

** more quickly, but which probably fail to find anything because **

** MATLAB does not ordinarily have a function "inverse". **

** **

** **

** In summary, WHAT lists the functions in a given directory, **

** WHICH finds the directory containing a given function, and **

** LOOKFOR finds all functions in all directories that might have **

** something to do with a given key word. **

** **

** **

** See also DIR , HELP , WHO , WHAT , WHICH . **

** **