fix Boolean vs boolean

Author: pearcej

source/ch4_conditionals.ptx

@@ -389,8 +389,8 @@ The <c>switch</c> statement is not used very often, and we recommend you do not
     <section xml:id="boolean-operators">
         <title>Boolean Operators</title>
 
-        <p><idx>boolean operators</idx> <idx>simple comparisons</idx> <idx>compound boolean expressions</idx>
-The conditionals used in the if statement can be <term>boolean variables</term>, <term>simple comparisons</term>, and <term>compound boolean expressions</term>.
+        <p><idx>Boolean operators</idx> <idx>simple comparisons</idx> <idx>compound Boolean expressions</idx>
+The conditionals used in the if statement can be <term>Boolean variables</term>, <term>simple comparisons</term>, and <term>compound Boolean expressions</term>.
         </p>
 
 <p><idx>ternary operator</idx>
@@ -408,7 +408,7 @@ of an assignment statement. The following table summarizes how this works:
     </row>
     <row>
       <cell><c>condition</c></cell>
-      <cell>The Boolean expression that is evaluated (e.g., <c>a % 2 == 0</c>).</cell>
+      <cell>The <c>boolean</c> expression that is evaluated (e.g., <c>a % 2 == 0</c>).</cell>
     </row>
     <row>
         <cell><c>?</c></cell>

source/ch5_loopsanditeration.ptx

@@ -173,7 +173,7 @@ public class StringIterationExample {
         <title>Indefinite Loops</title>
 
         <p><idx><c>while</c> loop</idx>
-            Both Python and Java support the <idx><c>while</c></idx> loop, which continues to execute as long as a condition is true.
+            Both Python and Java support the <c>while</c> loop, which continues to execute as long as a condition is true.
             Here is a simple example in Python that counts down from 5:
         </p>
         <program interactive="activecode" language="python">

source/ch8_filehandling.ptx

@@ -112,7 +112,7 @@
         </note>
 
         <p>
-            Now that we have created a new <c>File</c> object, we can create a file using the <c>createNewFile()</c> method from the <c>File</c> class. While the previous line of code creates an object within the program for the file, this method actually does the work of creating a file and saving it in the current working directory. This method returns a boolean value. If the method returns <c>true</c>, the file was successfully created. If the method returns <c>false</c>, there is already a file using the chosen file name. We can use this method's possible return values in tandem with an try/catch structure to determine if the file was created, or catch the error if a file with that file name already exists in the directory.
+            Now that we have created a new <c>File</c> object, we can create a file using the <c>createNewFile()</c> method from the <c>File</c> class. While the previous line of code creates an object within the program for the file, this method actually does the work of creating a file and saving it in the current working directory. This method returns a <c>boolean</c> value. If the method returns <c>true</c>, the file was successfully created. If the method returns <c>false</c>, there is already a file using the chosen file name. We can use this method's possible return values in tandem with an try/catch structure to determine if the file was created, or catch the error if a file with that file name already exists in the directory.
         </p>
 
         <p>
@@ -541,15 +541,15 @@
         </note>
 
         <p>
-            Speaking of overwriting data, what if we want to append text to the end of any text already in <c>myfile.txt</c>? To accomplish this, we can pass a boolean argument along with the file name when creating a new data argument:
+            Speaking of overwriting data, what if we want to append text to the end of any text already in <c>myfile.txt</c>? To accomplish this, we can pass a <c>boolean</c> argument along with the file name when creating a new data argument:
         </p>
 
         <pre>
             FileWriter myWriter = new FileWriter("myfile.txt", true); // true enables append mode
         </pre>
 
         <p>
-            Now, when we use <c>write()</c> method like before, the text will be appended if there is already text in the document. If we were to update our code to include the boolean argument:
+            Now, when we use <c>write()</c> method like before, the text will be appended if there is already text in the document. If we were to update our code to include the <c>boolean</c> argument:
         </p>
         <datafile label="my-file-8-4-6" filename="myfile.txt" xml:id= "my-file-8-4-6" editable="yes">
                 <pre>