Re: accostamento di oggetti e cambio di carattere

Perché in questo caso l’errore è:
`Running mktextfm phvr8t
mktextfm: Running mf-nowin -progname=mf \mode:=ljfour; mag:=1; nonstopmode; input phvr8t
This is METAFONT, Version 2.71828 (Web2C 7.5.6)
kpathsea: Running mktexmf phvr8t

! I can't find file `phvr8t'.
<*> …:=ljfour; mag:=1; nonstopmode; input phvr8t

Please type another input file name
! Emergency stop.
<*> …:=ljfour; mag:=1; nonstopmode; input phvr8t

Transcript written on mfput.log.
grep: phvr8t.log: No such file or directory
mktextfm: `mf-nowin -progname=mf \mode:=ljfour; mag:=1; nonstopmode; input phvr8t' failed to make phvr8t.tfm.
kpathsea: Appending font creation commands to missfont.log.

! Font T1/phv/m/n/10=phvr8t at 10.0pt not loadable: Metric (TFM) file not found
.

relax
l.85 \fontfamily{phv}\selectfont
{
?
`

Evidentemente la tua installazione è bacata.

Che sistema operativo e distribuzione usi?

Ciao
Enrico