* Only use alphanumeric (a–z, A–Z, 0–9), underscore (<code>_</code>), and dot (<code>.</code>) characters in string IDs. This is important because they're often used in places where some characters have special meaning (like file names or [[#Game state query|game state queries]]). | * Only use alphanumeric (a–z, A–Z, 0–9), underscore (<code>_</code>), and dot (<code>.</code>) characters in string IDs. This is important because they're often used in places where some characters have special meaning (like file names or [[#Game state query|game state queries]]). |