Inpaint
(Built-in Mathematica Symbol) Inpaint[image, region] retouches parts of image that correspond to nonzero elements in region.
InputAliases is an option for cells and notebooks which specifies additional Esc\[ThinSpace]name\[ThinSpace]Esc aliases to be allowed on input.
InputAssumptions is an option for WolframAlpha that specifies assumptions for current query input.
InputAutoReplacements is an option for cells and notebooks which specifies strings of characters that should be replaced immediately on input.
InputField[] represents a blank editable input field. InputField[x] represents an editable input field that currently contains the expression x. InputField[Dynamic[x]] takes ...
InputNamePacket[string] is a MathLink packet that contains in string the name to be assigned to the next input.
InputNotebook[] gives the current notebook into which keyboard input in the front end will be directed.
InputPacket[] is a MathLink packet that indicates a prompt for input as generated by Input.
InputStream["name", n] is an object that represents an input stream for functions such as Read and Find.
InputStringPacket[] is a MathLink packet that requests input in string form.