[ivette] fix some button titles issues

ivette/src/renderer/ASTview.tsx

@@ -111,10 +111,16 @@ const ASTview = () => {
   return (
     <>
       <TitleBar>
-        <IconButton icon="ZOOM.OUT" onClick={zoomOut} />
-        <IconButton icon="ZOOM.IN" onClick={zoomIn} />
-        <IconButton icon="CODE" onClick={themePopup} />
-        <IconButton icon="WRAPTEXT" selected={wrapText} onClick={setWrapText} />
+        <IconButton icon="ZOOM.OUT" onClick={zoomOut}
+          disabled={!theFunction}
+          title="Zoom In (increase font size)" />
+        <IconButton icon="ZOOM.IN" onClick={zoomIn}
+          disabled={!theFunction}
+          title="Zoom Out (decrease font size)" />
+        <IconButton icon="CODE" onClick={themePopup}
+          title="Choose Theme" />
+        <IconButton icon="WRAPTEXT" selected={wrapText} onClick={setWrapText}
+          title="Wrap Text" />
       </TitleBar>
       <Text
         buffer={buffer}

ivette/src/renderer/Controller.tsx

@@ -168,7 +168,10 @@ const RenderConsole = () => {
   return (
     <>
       <TitleBar label={command ? 'Command Line' : 'Console'}>
-        <Label className="dimmed" display={command && length > 0}>
+        <Label
+          className="dimmed"
+          display={command && length > 0}
+          title="Rank in History" >
           {1 + index}/{length}
         </Label>
         <Space />
@@ -205,20 +208,20 @@ const RenderConsole = () => {
           display={command}
           disabled={!next}
           onClick={doNext}
-          title="Previous Command"
+          title="Next Command"
         />
         <Space />
         <IconButton
           icon="MEDIA.PLAY"
           display={command}
           onClick={doExec}
-          title="Execute Command Line"
+          title="Execute Command"
         />
         <IconButton
           icon="EDIT"
           selected={command}
           onClick={switchCmd}
-          title="Edit Command Line"
+          title="Edit Command"
         />
       </TitleBar>
       <Text