Only show display_text message once per session.

__init__.py

@@ -31,6 +31,9 @@ import numpy as np
 import time
 import wx
 
+# Keep track if the instructions for navigating display_text has been shown
+displayTextUsageInstructions = False
+
 # Global variable for speech provider
 try:
     import speechd
@@ -164,13 +167,13 @@ def write_config(write_global=False):
         with open(globalPath + "/config.ini", 'w') as configfile:
             globalConfig.write(configfile)
 
-def read_config(read_global=False):
+def read_config(readGlobal=False):
     """Read configuration from file.
     
     Args:
-        read_global (bool): If True, read global config, otherwise local (default: False)
+        readGlobal (bool): If True, read global config, otherwise local (default: False)
     """
-    if not read_global:
+    if not readGlobal:
         try:
             with open(gamePath + "/config.ini", 'r') as configfile:
                 localConfig.read_file(configfile)
@@ -760,11 +763,14 @@ def display_text(text):
     # Create navigation text by filtering out blank lines
     navText = [line for line in text if line.strip()]
     
-    # Add instructions at the start
+    # Add instructions at the start on the first display
+    global displayTextUsageInstructions
+    if not displayTextUsageInstructions:
         instructions = ("Press space to read the whole text. Use up and down arrows to navigate "
                     "the text line by line. Press c to copy the current line to the clipboard "
                     "or t to copy the entire text. Press enter or escape when you are done reading.")
         navText.insert(0, instructions)
+        displayTextUsageInstructions = True
     
     # Add end marker
     navText.append("End of text.")