Type 2+2 and then press Shift+Enter (hold down the Shift key and press Enter) to tell Mathematica to evaluate your input. Note that labels are added automatically, and output ...

CUDAImageSubtract[img, x] subtracts an amount x from each channel value in img.CUDAImageSubtract[mem, x] subtracts an amount x from each channel value in ...

SQLColumnPrivileges[conn] returns a table of access rights about the columns in an SQL connection.

SQLTableExportedKeys[conn] returns a table of foreign key descriptions that reference the table's primary key.

SQLTableImportedKeys[conn] returns a table of primary key descriptions that are referenced by the table's foreign key.

SQLTableIndexInformation[conn] returns a table of indices and statistics for a table.

SQLTablePrimaryKeys[conn] returns a table of primary key descriptions.

SQLTablePrivileges[conn] returns a table of access rights about the tables in an SQL connection.

JavaBlock -- release any Java objects created during evaluation once evaluation finishes, BeginJavaBlock, EndJavaBlock -- mark the beginning and end of a Java block, ...

LoadedJavaClasses[] returns a list of the classes currently loaded into Java by Mathematica.