Some pictures replaced

docbook/users-guide/AddingaClass.md

@@ -1152,12 +1152,12 @@ ClassImp(ABC);
 **Step 2:** Load the ABC class in the script.
 
 ``` {.cpp}
-// Check if ABC is already loaded
-if (!TClass::GetDict("ABC")) {
-gROOT->ProcessLine(".L ABCClass.C++");
-}
+   // Check if ABC is already loaded
+   if (!TClass::GetDict("ABC")) {
+      gROOT->ProcessLine(".L ABCClass.C++");
+   }
 
-// Use the Class
-ABC *v = new ABC;
-v->p = (sqrt((v->a * v->a)+ (v->b * v->b)+(v->c * v->c)));
+   // Use the Class
+   ABC *v = new ABC;
+   v->p = (sqrt((v->a * v->a)+ (v->b * v->b)+(v->c * v->c)));
 ```

docbook/users-guide/FoldersTasks.md

@@ -4,7 +4,9 @@
 ## Folders
 
 
-![](pictures/030000E1.png)A **`TFolder`** is a collection of objects
+![](pictures/030000E1.png)
+
+A **`TFolder`** is a collection of objects
 visible and expandable in the ROOT object browser. Folders have a name
 and a title and are identified in the folder hierarchy by an "UNIX-like"
 naming convention. The base of all folders is `//root`. It is visible at
@@ -296,7 +298,7 @@ browser, get the list of browseable objects first and add it to the
 collection.
 
 ``` {.cpp}
-gROOT->GetListOfBrowsables()->Add(run);
+   gROOT->GetListOfBrowsables()->Add(run);
 ```
 
 The first parameter of the `Add` method is a pointer to a **`TTask`**,

docbook/users-guide/Graphics.md

@@ -3868,14 +3868,14 @@ inaccordance with `fLocalFrame` flag.
 A typical example from TGeoBBox::FillBuffer3D:
 
 ``` {.cpp}
-if (reqSections & TBuffer3D::kBoundingBox) {
-Double_t halfLengths[3] = { fDX, fDY, fDZ };
-buffer.SetAABoundingBox(fOrigin, halfLengths);
-if (!buffer.fLocalFrame) {
-TransformPoints(buffer.fBBVertex[0], 8);
-}
-buffer.SetSectionsValid(TBuffer3D::kBoundingBox);
-}
+   if (reqSections & TBuffer3D::kBoundingBox) {
+      Double_t halfLengths[3] = { fDX, fDY, fDZ };
+      buffer.SetAABoundingBox(fOrigin, halfLengths);
+      if (!buffer.fLocalFrame) {
+         TransformPoints(buffer.fBBVertex[0], 8);
+      }
+      buffer.SetSectionsValid(TBuffer3D::kBoundingBox);
+   }
 ```
 
 #### Logical and Physical Objects

docbook/users-guide/TutorialsandTests.md

@@ -8,7 +8,9 @@ of ROOT. They are located in two directories: `$ROOTSYS/tutorials` and
 ## \$ROOTSYS/tutorials
 
 
-![](pictures/030001F9.png)The tutorials directory contains many example
+![](pictures/030001F9.png)
+
+The tutorials directory contains many example
 scripts. *To have all examples working you must have write permission
 and you will need to execute`hsimple.C` first*. If you do not have write
 permission in the directory` $ROOTSYS/tutorials`, copy the entire
@@ -285,8 +287,9 @@ This table summarizes the findings on the impact of compressions:
 
 #### Setting the Split Level
 
-![](pictures/080001FA.png)Split Level = 0:
+![](pictures/080001FA.png)
 
+Split Level = 0: \
 Now we execute Event with the split parameter set to 0:
 
 ``` {.cpp}