Clarify that the MathJax comment is Notebook specific.

IPython/core/magics/display.py

@@ -1,55 +1,57 b''
 """Simple magics for display formats"""
 #-----------------------------------------------------------------------------
 #  Copyright (c) 2012 The IPython Development Team.
 #
 #  Distributed under the terms of the Modified BSD License.
 #
 #  The full license is in the file COPYING.txt, distributed with this software.
 #-----------------------------------------------------------------------------
 
 #-----------------------------------------------------------------------------
 # Imports
 #-----------------------------------------------------------------------------
 
 # Our own packages
 from IPython.core.display import display, Javascript, Latex, SVG, HTML
 from IPython.core.magic import  (
     Magics, magics_class, cell_magic
 )
 
 #-----------------------------------------------------------------------------
 # Magic implementation classes
 #-----------------------------------------------------------------------------
 
 
 @magics_class
 class DisplayMagics(Magics):
     """Magics for displaying various output types with literals
     
     Defines javascript/latex/svg/html cell magics for writing 
     blocks in those languages, to be rendered in the frontend.
     """
     
     @cell_magic
     def javascript(self, line, cell):
         """Run the cell block of Javascript code"""
         display(Javascript(cell))
         
     
     @cell_magic
     def latex(self, line, cell):
         """Render the cell as a block of latex
         
-        This magic only renders the subset of latex defined by MathJax 
+        The subset of latex which is support depends on the implementation in
+        the client.  In the Jupyter Notebook, this magic only renders the subset 
+        of latex defined by MathJax 
         [here](https://docs.mathjax.org/en/v2.5-latest/tex.html)."""
         display(Latex(cell))
 
     @cell_magic
     def svg(self, line, cell):
         """Render the cell as an SVG literal"""
         display(SVG(cell))
 
     @cell_magic
     def html(self, line, cell):
         """Render the cell as a block of HTML"""
         display(HTML(cell))