VIEW TAG is a predefined screen tag also referred to as a "system tag" or "ViewDAQ Tag".
View Tags describe time, date, alarm logs etc (for example %AALMGLOBAL) they show up using the VIEWDAQ button of the Point List. All View Tags begin with the percent sign (%). %A is an analog type, %D is a digital type and %T is a text type. Some View Tags are assigned Level 255 and are READ only.
A user can be assigned the ability to change these tags if he is assigned level 127 (for example View Tag = 127) and the View Tag is not read only.
Setting a users Level = 127 for VIEW TAG, enables him to change the ALL View tags. To enable users to change only some View Tags, consider using a script or keymacro assigned to a pushbutton.
Pushbutton Keymacros and screen scripts can change most View Tags, regardless of the user's security Area and Level.