Document global operators

src/main/resources/assets/integratedscripting/lang/en_us.json

@@ -120,11 +120,13 @@
   "info_book.integratedscripting.writing.functions.text5": "For example, you can create a function with a single &8Item&0 argument that returns a &9Boolean&0 to use as filter &2Operator&0 for filtering a list of items that you read from a Chest.",
   "info_book.integratedscripting.writing.functions.text6": "Below, you can find examples of different types of functions that could be created.",
 
-  "info_book.integratedscripting.writing.globals": "Global values",
-  "info_book.integratedscripting.writing.globals.text1": "TODO",
-  "info_book.integratedscripting.writing.globals.text2": "TODO",
+  "info_book.integratedscripting.writing.globals": "Global operators",
+  "info_book.integratedscripting.writing.globals.text1": "When writing JavaScript code, you can make use of the global &oidContext&r variable to access all Integrated Dynamics operators as functions through the &oops&r field. This allows you to make use of built-in operators when creating new ones.",
+  "info_book.integratedscripting.writing.globals.text2": "For example, you can write an &8Item&0 filter that checks if an item is stackable and if it has a stack size of at least 16, as shown below.",
+  "info_book.integratedscripting.writing.globals.text3": "To know what the name is of the operator you want to execute, you can look at their global name via the operator tooltips inside the &lLogic Programmer&r or in the list of operators in the Logic Programming section of this book.",
+  "info_book.integratedscripting.writing.globals.text4": "Since invoking operators via &oidContext&r can become quite verbose, you can choose to store operators in a custom constant variable, as shown in the second example. Alternatively, you can make use of &oobject methods&r, which are discussed in the next section.",
 
-  "info_book.integratedscripting.writing.methods": "Object value methods",
+  "info_book.integratedscripting.writing.methods": "Object methods",
   "info_book.integratedscripting.writing.methods.text1": "TODO",
   "info_book.integratedscripting.writing.methods.text2": "TODO"
 }

src/main/resources/data/integratedscripting/info/scripting_info.xml

@@ -107,6 +107,17 @@ const isOdd = (value) => value % 2 !== 0;</appendix>
         <section name="info_book.integratedscripting.writing.globals">
             <paragraph>info_book.integratedscripting.writing.globals.text1</paragraph>
             <paragraph>info_book.integratedscripting.writing.globals.text2</paragraph>
+            <paragraph>info_book.integratedscripting.writing.globals.text3</paragraph>
+            <paragraph>info_book.integratedscripting.writing.globals.text4</paragraph>
+            <appendix type="textfield" scale="0.8">function filterItem(item) {
+  return idContext.ops.itemstackStackable(item) &amp;&amp; idContext.ops.itemstackStacksize(item) >= 16;
+}</appendix>
+            <appendix type="textfield" scale="0.8">
+const stackable = idContext.ops.itemstackStackable;
+const stacksize = idContext.ops.itemstackStacksize;
+function filterItemCompact(item) {
+  return stackable(item) &amp;&amp; stacksize(item) >= 16;
+}</appendix>
         </section>
 
         <section name="info_book.integratedscripting.writing.methods">