I found that if there are more than two elses that are not used, an error will be reported.

[mryao199]

vi test.txt mode: test zoom: zoom1,zoom2,zoom3,zoom4 IF [water] IN {"water1", "water2"} THEN [water_a] = "NA" ELSE [water_m] <> "NAm"; IF [action] = "action1" OR [action] = "action2" THEN [high_i] = "NAi" ELSE [high_e] <> "NAe"; wq pict.exe test.txt error info Constraints Warning: Constraint IF [water] IN {"water1", "water2"}THEN [water_a] = "NA" ELSE [water_m] <> "NAm"; contains unknown parameter. Skipping... Constraints Warning: Constraint IF [action] = "action1" OR [action] = "action2"THEN [high_i] = "NAi" ELSE [high_e] <> "NAe"; contains unknown parameter. Skipping... Constraints Warning: Constraint ; contains unknown parameter. Skipping...

I found that if there are more than two elses that are not used, an error will be reported.