Question: Which lake has a main input and output from the Rhone river?
About the article "Switzerland", section "Geography".

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A device that provides several isolated outputs from one looping or bridging input, and has a sufficiently high input impedance and input-to-output isolation to prevent loading of the input source. 
Apart from strings, which print themselves, FALSE has a number of operators for input/output from and to standard streams.
codice_47 (period) prints the topmost stack item out as an integer.
codice_48 (comma) prints out the topmost stack item as an ASCII character.
codice_49 reads a single character from standard input and pushes it on the stack.
codice_50 flushes both standard input and standard output streams.  
Lake Geneva is divided into three parts because of its different reasons of formation (sedimentation, tectonic folding, glacial erosion):  "Haut Lac" (Upper Lake), the eastern part from the Rhone estuary to the line of Meillerie–Rivaz "Grand Lac" (Large Lake), the largest and deepest basin with the lake's largest width "Petit Lac" (Small Lake), the most south-west, narrower and less deep part from Yvoire–Promenthoux next Prangins to the exit in Geneva According to the Swiss Federal Office of Topography, swisstopo, "Lac de Genève" designates that part of the "Petit Lac", which lies within the cantonal borders of Geneva (excluding the cantonal exclave Céligny), so about from Versoix–Hermance to the Rhone outflow in Geneva.
The Chablais Alps border is its southern shore, the western Bernese Alps lie over its eastern side.
The high summits of Grand Combin and Mont Blanc are visible from some places.
Compagnie Générale de Navigation sur le lac Léman (CGN) operates boats on the lake.
The lake lies on the course of the Rhone.
The river has its source at the Rhone Glacier near the Grimsel Pass to the east of the lake and flows down through the Canton of Valais, entering the lake between Villeneuve and Le Bouveret, before flowing slowly towards its egress at Geneva.
Other tributaries are La Dranse, L'Aubonne, La Morges, La Venoge, La Vuachère, and La Veveyse.
Lake Geneva is the largest body of water in Switzerland, and greatly exceeds in size all others that are connected with the main valleys of the Alps.
It is in the shape of a crescent, with the horns pointing south, the northern shore being , the southern shore in length.
The crescent form was more regular in a recent geological period, when the lake extended to Bex, about south of Villeneuve.
The detritus of the Rhone has filled up this portion of the bed of the lake, and it appears that within the historical period the waters extended about beyond the present eastern margin of the lake.
The greatest depth of the lake, in the broad portion between Évian-les-Bains and Lausanne, where it is just in width, has been measured as , putting the bottom of the lake at above sea level.
The lake's surface is the lowest point of the cantons of Valais and Vaud.
The beauty of the shores of the lake and of the sites of many of the places near its banks has long been celebrated.
However it is only from the eastern end of the lake, between Vevey and Villeneuve, that the scenery assumes an Alpine character.
On the south side the mountains of Savoy and Valais are for the most part rugged and sombre, while those of the northern shore fall in gentle vine-covered slopes, thickly set with villages and castles.
The snowy peaks of the Mont Blanc are shut out from the western end of the lake by the ridge of the Voirons, and from its eastern end by the bolder summits of the Grammont, Cornettes de Bise and Dent d'Oche, but are seen from Geneva, and between Nyon and Morges.
From Vevey to Bex, where the lake originally extended, the shores are enclosed by comparatively high and bold mountains, and the vista terminates in the grand portal of the defile of St. Maurice, cleft to a depth of nearly between the opposite peaks of the Dents du Midi and the Dent de Morcles.
The shore between Nyon and Lausanne is called "La Côte" because it is "flatter".
Between Lausanne and Vevey it is called Lavaux and is famous for its hilly vineyards.
The average surface elevation of above sea level is controlled by the Seujet Dam in Geneva. 
In shells on Unix-like operating systems and in the modern Windows shell, filters default to getting their data from standard input (the main input stream) and writing their output to standard output (the main output stream); auxiliary input may come from command line flags or configuration files, while auxiliary output may go to standard error.
The command syntax for getting data from a device or file other than standard input is the input operator (codice_1).
Similarly, to send data to a device or file other than standard output is the output operator (codice_2).
To append data lines to an existing output file, one can use the append operator (codice_3).
Filters may be strung together into a pipeline with the pipe operator ("codice_4").
This operator signifies that the main output of the command to the left is passed as main input to the command on the right. 
Rhodanien (French, the adjective derived from the river Rhone) may refer to:  the Rhone river or its valley  "le sillon rhodanien" (literally "the furrow of the Rhone"), which is the name of the long, straight Saône and Rhone river valleys, a deep cleft running due south to the Mediterranean and separating the Alps from the Massif Central  "Rhodanien", a dialect of the Lyon région, and of the Franco-Provençal language  "Provençal rhodanien", a dialect of the Nîmes, Arles and Avignon régions, and a sub-dialect of the Provençal dialect  "Le Rhodanien" (train), which ran between Geneva/Paris and Marseille