FMSLogo Code

Correct a misdocumentation that 1 reads both the X and Y axis.
Also document the other supported masks and other minor fixes.

Change a conditional tense to the present tense.
This style is easier to read and matches the rest of the manual.

Fix markup (<parameter> -> <userinput> for a default value).

Fix typo: "then then" -> "then the"

Simplify the example by replacing a long expression with its value:
ARRAYTOLIST LISTTOARRAY "at -> [a t]

Update Spanish translation table based on recent changes.
This includes an update for Bug #511, which fixed the Spanish translations for
READPOS and WRITEPOS (as POSLECTURA and POSESCRITURA, respectively).

Remove misinformation from PORTMODE documentation
The documentation had conflicting statements that speed could and
could not be set by FMSLogo. In fact, only the flow control cannot
be set through FMSLogo. The misinformation was a transcription error
from porting the MSWLogo RTF documentation to FMSLogo's DocBook format.

Clarify what is meant by "flush" and document that the input is ignored.

Clarify the example's explanatory note.

Remove unneeded parts of the example for ERASEFILE.
All the example wants to show is that a file exists and can be opened.
It's not important to read its contents.