Subject: Re: Testing momentum screen using GTR1
The terminology can get confusing. fields have different values for each ticker. signals only have one value on each market date, and that value is applied to all stocks.

The reference screens' effect on the screen is limited to the imported values. The steps in the reference screen are NOT applied to the screen. For example, {NasBig20timed} uses TimingSignal < 0, while the reference screen has TimingSignal > 0.

https://gtr1.net/2013/?~NasBig...


=== link ===
importf and imports
"The functions operate as follows: importf causes a new and separate backtest of the screen referenced by screen_number (i.e., the source screen) to be run in which the values of the field referenced by field_number or field_label are exported to a new temporary field file with default value equal to the value specified with default_value. ...

imports functions similarly, except that only one value is exported on each market date to the temporary field file, and that value is applied to all stocks in the course of the import."
https://yorickm.com/Message.ph...