Modern digital audio consoles or mixers use automation. Automation allows the console to remember the audio engineer's adjustment of faders during the post-production editing process. A timecode is necessary for synchronization of automation.
Auto Write: used the first time automation is created or when writing over existing automation
Auto Touch: writes automation data only while a fader is touched/faders return to any previously automated position after release
Auto Latch: starts writing automation data when a fader is touched/stays in position after release
Auto Read: digital Audio Workstation performs the written automation
Auto Off: automation is temporarily disabled
All of these include the mute button. If mute is pressed during writing of automation, the audio track will be muted during playback of that automation. Depending on software, other parameters such as panning, sends, and plug-in controls can be automated as well. In some cases, automation can be written using a digital potentiometer instead of a fader.