One more tooltip and some clarification

Author: Askaniy

src/auxiliary.py

@@ -329,6 +329,8 @@ def color_indices_parser(indices: dict):
     interpretation: since the standard deviations subtracting rule is, in fact, the Pythagorean theorem,
     the solutions space is the same as if you try to build a line of right triangles, for each one
     the next cathetus is linked to a previous cathetus by their square.
+    (To draw on the plane you have to use rhombuses of the same area and the same equal sides
+    instead of squares.)
     N hypotenuses are standard deviations of color indices, and N+1 different cathetes are the sought
     standard deviations of the photospectrum.
     The whole triangle line possible positions can be described by just one parameter (1D parametric

src/gui.py

@@ -153,7 +153,7 @@ def frame(num: int, filtersDB: tuple, lang: str):
                 sg.InputCombo(('', *filtersDB), enable_events=True, expand_x=True, key='T2_filter'+n)
             ],
             [
-                sg.Text(tr.gui_evaluate[lang], key='T2_evalText'+n),
+                sg.Text(tr.gui_evaluate[lang], key='T2_evalText'+n, tooltip=tr.gui_evaluate_note[lang]),
                 sg.Input('x', size=1, key='T2_eval'+n, expand_x=True)
             ],
         ]

src/strings.py

@@ -310,6 +310,11 @@
     'ru': 'Выполнить',
     'de': 'Auswerten von'
 }
+gui_evaluate_note = {
+    'en': 'Apply a function to the brightness values (x), written in Python syntax',
+    'ru': 'Применить функцию к значениям яркости (x), используется синтаксис Python',
+    'de': 'Wende Funktion auf Helligkeitswerte (x) an, in Python Syntax geschrieben'
+}
 #gui_brightness = {
 #    'en': 'Brightness',
 #    'ru': 'Яркость',