Re: StyleBox["A","MB"],RowBox[{"rrow3D",... inserted into Arrow3D[...]

*To*: mathgroup at smc.vnet.net*Subject*: [mg61040] Re: StyleBox["A","MB"],RowBox[{"rrow3D",... inserted into Arrow3D[...]*From*: "Jens-Peer Kuska" <kuska at informatik.uni-leipzig.de>*Date*: Sat, 8 Oct 2005 02:48:59 -0400 (EDT)*Organization*: Uni Leipzig*References*: <di5a34$3lb$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Hi, I would think, that the FontEnd optimize your input, because otherwise the box representation would become more and more complicated, i.e. , say you write a text, Mathematica put it into a RowBox[] than you add in the middle a formula, Mathematica split the RowBox[] and insert the formula in a new box. Finaly you delete the formula, while you reformulate the text. The splitted RowBox[] would remain .. If this happens quite often when you write a text, the RowBoxes[] would be splitted and splitted. Even in cases where it would be unnessesary after some deletions. Mathematic *should* try to reformat these boxes to make the structure simpler. I'm not sure if this is realy done but I think so. Regards Jens "Steven T. Hatton" <hattons at globalsymmetry.com> schrieb im Newsbeitrag news:di5a34$3lb$1 at smc.vnet.net... |I am writing a package with the following Cell: | Cell[BoxData[ | RowBox[{ | RowBox[{ | StyleBox[ | RowBox[{ | StyleBox["A", | "MB"], "rrow3D"}]], "[", | RowBox[{ | RowBox[{"List", "[", | RowBox[{"xt_", ",", "yt_", ",", "zt_"}], "]"}], ",", | RowBox[{"List", "[", | RowBox[{"xh_", ",", "yh_", ",", "zh_"}], "]"}], ",", | "opts___"}], | "]"}], ":=", | RowBox[{"{", "}"}]}]], "Input", | CellLabel->"In[66]:="] | | At some point, the Arrow3D symbol was transmogrified into: | | Cell[BoxData[ | RowBox[{ | RowBox[{ | StyleBox["A", | "MB"], | RowBox[{"rrow3D", "[", | RowBox[{ | RowBox[{"List", "[", | RowBox[{"xt_", ",", "yt_", ",", "zt_"}], "]"}], ",", | RowBox[{"List", "[", | RowBox[{"xh_", ",", "yh_", ",", "zh_"}], "]"}], ",", | "opts___"}], | "]"}]}], ":=", | RowBox[{"{", "}"}]}]], "Input", | CellLabel->"In[67]:="] | | It took me a while to figure out why I was getting: | | "SetDelayed::write: Tag Times in A\rrow3D[{xt_, yt_, zt_}, {xh_, yh_, zh_}, | opts___] is Protected." | | I'm not sure how this came to be. Can anybody shed some light on what might | cause Mathematica to silently modify the Head like that? | -- | "Philosophy is written in this grand book, The Universe. ... But the book | cannot be understood unless one first learns to comprehend the language... | in which it is written. It is written in the language of mathematics, ...; | without which wanders about in a dark labyrinth." The Lion of Gaul |