human–computer interaction Human–computer interaction (HCI) is research in the design and the use of computer technology, which focuses on the interfaces between people ( users) and computers. HCI researchers observe the ways humans interact with computers and design ...

, simultaneous editing is an

end-user development End-user development (EUD) or end-user programming (EUP) refers to activities and tools that allow end-users – people who are not professional software developers – to program computers. People who are not professional developers can use EUD ...

technique allowing a user to make multiple simultaneous edits of text in a multiple selection at once through direct manipulation. Multiple selections and cursors are typically created by using a

keyboard shortcut computing, a keyboard shortcut also known as hotkey is a series of one or several keys to quickly invoke a software program or perform a preprogrammed action. This action may be part of the standard functionality of the operating system or ...

to select repeated instances of the same text or text fragments surrounded by the same

delimiter A delimiter is a sequence of one or more characters for specifying the boundary between separate, independent regions in plain text, mathematical expressions or other data streams. An example of a delimiter is the comma character, which acts as ...

s, by using a ''search'' feature to select all instances of a ''search term'', by selecting the same column in multiple lines, or by selecting text or cursor positions with a mouse. The Lapis experimental web browser and text editor is also able to infer selections based on concept learning from positive and negative examples given by the user during a process known as ''selection guessing''. Tools for data wrangling (mass reformatting) also sometimes include commands for simultaneous editing of all data in a column or category.

Editors supporting simultaneous editing

* ''Simultaneous editing'' in Lapis * ''Multiple se