As these pages print it.
One Address, Two Eras of the Site, and What Is Still Fixed
One address is printed in more than one place, and the words are not identical. The splash prints Piazza Augusto Imperatore, 30 and 00186 ROMA. The English frameset prints 00186 ROME. The 2010 frameset at home.htm prints 00186 ROMA again, with different telephone digits. The square and the 30 are on the splash and in the 1950 sentence. The city word and the telephone do not stay still.
The restaurant is Il vero Alfredo all'Augusteo, at Piazza Augusto Imperatore 30, in Rome. The history page also names Via della Scrofa with no number. Two eras of the site still point at one restaurant. They do not point at one identical block of text. The portrait caption Alfredo III° belongs to the splash, not to every line.

The square and the 30, repeated
The splash line is Piazza Augusto Imperatore, 30. A comma sits between Imperatore and 30. The history sentence uses the same square and the same 30 for 1950. Two printings, one civic number. Neither adds a second number. Neither adds a floor or a bell. Via della Scrofa, on the same history page, has no number at all.
What changes is the material around the 30. The splash puts 00186 ROMA on the next line. The English frameset puts 00186 ROME in its lines, and those lines do not restate the 30. The 2010 frameset puts 00186 ROMA, again without a restated 30 in the lines used here. The history sentence leaves the postcode out. The 30 is stable where it is printed. The line around it is not.
The note on the square follows that 30. This page uses the repetition as the fixed part. The splash and the 2010 frameset agree on ROMA as the city word beside 00186. The English frameset prints ROME. History agrees on the 30 and is silent on the postcode. Silence is not ROME, and it is not ROMA.
ROMA on two pages, ROME on one
ROMA is in capitals on the splash. ROMA is in capitals on the 2010 frameset. ROME is in capitals on the English frameset. The postcode 00186 is the number those three lines share. The city word is the part that moves. The restaurant is in Rome. ROMA and ROME are the printed forms of the city word. They are not two cities.
The history page, in the 1950 sentence, uses neither ROMA nor ROME. It uses the square and the 30. A reader who wants every page to say the city in capitals will not find that in the history sentence. The sentence still places the square. The capitals are a printing on the splash and the framesets. The identity of the site is that the restaurant is in Rome, which does not require every line to choose ROMA or ROME.
Piazza Rosa, the photo alt, is not a third spelling of ROMA. Rosa and ROMA are different. The alt does not say the Augustus square. It should not be folded into the postcode line. The postcode line is 00186 plus a city word.
Three ways of printing the telephone
The splash telephone breaks off at +39 06/. The fax is a bare slash. The English frameset prints Tel. +39 06/ - +39 06/. Two prefixes, both unfinished, with a hyphen between them. The 2010 frameset prints Tel. 06/68.78.734 - 06/68.78.615. Those digits are not on the splash. They are not on the English line. Three telephone printings. Only one has the longer digits. Only the splash, in these lines, has the bare fax slash.
The 2010 line, as given, does not start with +39. The splash line does. The English line uses +39 twice and still has no subscriber number. Copying the 2010 digits onto the splash would join pages the site keeps apart. The note on the telephone holds that rule. The telephone is the part of the block that the two framesets did not fix into one line. The square does not suffer that split on the splash.
The frameset lines quoted here do not include the bare fax slash. The splash does not include the 2010 digits. The portrait caption Alfredo III° sits on the splash and is not a telephone.
AUUSTEO, missing the G
The English frameset title is THE REAL ALFREDO ALLA AUUSTEO. AUUSTEO has no G. The restaurant name is Il vero Alfredo all'Augusteo. Augusteo has the G. ALLA is not the same string as all'. The title and the name point at one restaurant and do not spell it in one way. THE REAL is capitals. Il vero is the name as given for the restaurant.
The missing G does not touch the 30. The splash still prints Piazza Augusto Imperatore, 30. The English frameset, in the lines given here, prints 00186 ROME and the broken telephone, not a new civic number caused by the typo. The note on the two titles puts the titles together. This page only shows that the typo does not move the 30 and does not turn ROME back into ROMA.
The splash caption Alfredo III° does not use AUUSTEO. The history names Alfredo I, II, and III do not use it. One history printing drops the o in Alfred II. That is a different missing letter, on a different page, in a different word. Two strings. Two jobs.
The history sentence and Piazza Rosa
The 1950 sentence has the square and the 30. The same page names Via della Scrofa with no number. The older street never receives 30. The square does. 1908, with Ines, is earlier than 1950 and is not a civic number. Alfred II, missing the o, is a printing, not a street. Armando as Alfredo II keeps the o. Alfredo III is named with the later address. The degree sign stays on the splash.
The photo alt Piazza Rosa is on that history page and is not the Augustus square. The splash and the frameset city words do not adopt Rosa as their address. The splash uses Piazza Augusto Imperatore. The alt remains a disagreement beside the 1950 sentence, not a third form of the postcode. The note on the two addresses follows Scrofa and the square. This page follows what stayed fixed when the site printed the postcode again.
Umberto's moustache is on the history page. It is not in the splash address block. The golden fork and spoon are already part of the restaurant story. They are not the comma before 30.
What stays fixed on the square
Fixed, where the lines print it: the restaurant in Rome, the square, the 30. The splash has them. The 1950 sentence has the square and the 30. Not fixed: ROMA against ROME, the telephone, the fax slash, the missing G in AUUSTEO, the missing o in one Alfred II, the alt Piazza Rosa, the street with no number. The 2010 digits stay off the splash.
Other pages add facts that still do not move the 30. Friday and Saturday match on the aperitivo pages, with cocktails before dinner. The price 23,50 stays on Costoletta di vitello alla Sassi and nowhere else. The gallery holds about 58 names, including royal parties and football labels, and it does not list the 2004 paths for Kennedy, Johnson, Bush, or disney. The franchising pages looked at opening elsewhere. Elsewhere does not receive the 30.
The history sentence and the splash keep one address at the centre. The words around it change. The telephone is the clearest change, because the digits on home.htm are not on the splash. The square and the 30 remain the fixed part.