rscp/transcribe/list/blinking is a SAP Parameter attribute which is used to control Use blinking to indicate transcriptions information. This is available within R/3 SAP systems depending on the version and release level.
Below is the standard documentation available and a few details of the attributes values .
If the system transcribes text during output because it contains
characters that the screen cannot display, a field such as this should
be highlighted in lists using blinking.
See SAP Parameter Documentation for full SAP documentation for this profile parameter.