Make arguments like Context.GrobName accessible as symbol lists

Documentation/es/learning/fundamental.itely

Index: Documentation/es/learning/fundamental.itely
diff --git a/Documentation/es/learning/fundamental.itely b/Documentation/es/learning/fundamental.itely
index c657ead6d352ec89ad338b01a78347e53a9696db..a2daef1d69c763922f34235800fda89da795dd06 100644
--- a/Documentation/es/learning/fundamental.itely
+++ b/Documentation/es/learning/fundamental.itely
@@ -8,7 +8,7 @@
     Guide, node Updating translation committishes..
 @end ignore
 
-@c \version "2.16.0"
+@c \version "2.17.6"
 
 
 @node Conceptos fundamentales
@@ -844,15 +844,15 @@ las complicaciones se explicarán en secciones posteriores).
   \\  % Voice two
     {
       % Ignore these for now - they are explained in Ch 4
-      \once \override NoteColumn #'ignore-collision = ##t
+      \once \override NoteColumn.ignore-collision = ##t
       <ees, c>2
-      \once \override NoteColumn #'force-hshift = #0.5
+      \once \override NoteColumn.force-hshift = #0.5
       des2
     }
   \\  % No voice three
   \\  % Voice four
     {
-      \override NoteColumn #'force-hshift = #0
+      \override NoteColumn.force-hshift = #0
       aes'2 f4 fes
     }
   >> |
@@ -893,15 +893,15 @@ entienda.
   \\  % Voice two
     { \voiceTwoStyle
       % Ignore these for now - they are explained in Ch 4
-      \once \override NoteColumn #'ignore-collision = ##t
+      \once \override NoteColumn.ignore-collision = ##t
       <ees, c>2
-      \once \override NoteColumn #'force-hshift = #0.5
+      \once \override NoteColumn.force-hshift = #0.5
       des2
     }
   \\  % No Voice three (we want stems down)
   \\  % Voice four
     { \voiceThreeStyle
-      \override NoteColumn #'force-hshift = #0
+      \override NoteColumn.force-hshift = #0
       aes'2 f4 fes
     }
   >> |
@@ -2991,8 +2991,7 @@ forma que los valores sean idénticos.
         @}
       >>  % % fin del contexto de Staff ManualUno
       \new Staff = "ManualDos" \with @{
-        \override VerticalAxisGroup
-          #'staff-staff-spacing  #'stretchability = 5
+        \override VerticalAxisGroup.staff-staff-spacing.stretchability = 5
       @} <<
         \keyTime
         \clef "bass"
@@ -3056,8 +3055,7 @@ PedalOrganMusic = \relative c {
         }
       >>  % end ManualOne Staff context
       \new Staff = "ManualTwo" \with {
-        \override VerticalAxisGroup
-          #'staff-staff-spacing #'stretchability = 5
+        \override VerticalAxisGroup.staff-staff-spacing.stretchability = 5
       } <<
         \keyTime
         \clef "bass"
@@ -3127,7 +3125,7 @@ usuario) para hacer trucos:
 @lilypond[quote,verbatim,ragged-right]
 dolce = \markup { \italic \bold dolce }
 
-padText = { \once \override TextScript #'padding = #5.0 }
+padText = { \once \override TextScript.padding = #5.0 }
 fthenp =_\markup {
   \dynamic f \italic \small { 2nd } \hspace #0.1 \dynamic p
 }
@@ -3159,7 +3157,7 @@ leer, sobre todo la última línea.
 violin = \relative c'' @{
   \repeat volta 2 @{
     c4._\markup @{ \italic \bold dolce @} b8 a8 g a b |
-    \once \override TextScript #'padding = #5.0
+    \once \override TextScript.padding = #5.0
     c4.^"hi there!" d8 e' f g d |
     c,4.\markup @{
       \dynamic f \italic \small @{ 2nd @} \hspace #0.1 \dynamic p
@@ -3186,7 +3184,7 @@ padText =
      (parser location padding)
      (number?)
    #{
-     \once \override TextScript #'padding = #padding
+     \once \override TextScript.padding = #padding
    #})
 
 \relative c''' {