Nuke

Primary Color Operations
A color oparator that effects all pixels. Mathematical accurate. Can't destroy information with clamping turned off.

Secondary Color Operator
A color oparation that effects pixels based on a criteria. Based on perception. Can remove information by for example setting the saturation or contrast to 0. Grade:
 * Blackpoint: inverse division
 * Whitepoint: division
 * Lift: inverse multiplication
 * Gain: multiplication
 * Multiply: multiplication
 * Offset: addition
 * Gamma: function (Changes the position of the contrast)

Change all read directories

 * 1) Press the /-key to get the dialog box for selecting all nodes of a node type.
 * 2) Type in read and press ok.
 * 3) With all the read nodes selected press cntrl + shift + ? or go to Edit>Node>Filename>Search and Replace
 * 4) Type the old path in the search and the new path in the replace and click "ok".