| 
	          | PARAMETER | MEANING | VALUES |  
	| task | Informs which task will be executed: start, for opening the initial menu
 alphabetic_index, accesses the database through the alphabetical 
                index
 kwic_index, accesses the database through the kwic index 
                (key word in context index)
 exact_term, searches in the database for a term that 
                is exactly as typed
 list_terms, searches in the database for all terms containing 
                the word typed
 hierarchic, accesses the existing DeCS hierarchy
 
 | start alphabetic_index
 kwic_index
 exact_term
 list_terms
 hierarchic
 
 |  
	| previous_page | Informs the name of last page in which the DeCS Server system 
                passed by. The value must be necessarily homepage | homepage |  
	| interface_language | Language of the interface | i, for English e, for Spanish
 p, for Portuguese
 |  
	| search_language | Language of the Descriptors (and other contents) of the DeCS database. | i, for English e, for Spanish
 p, for Portuguese
 |  
	| search_exp | Word to be searched. It is the only non-required parameter (optional). 
                If present, the system shows the search result; otherwise, the 
                system presents a page with a textbox for entering the word to 
                be searched. |  |  
	| show_tree_number | Informs 
                  if the hierarchical number is to be shown next to the descriptors 
                  when the hierarchical tree is presented. If this is the desire, 
                  this variable must be sent with the value 'T'; otherwise, send 
                  it with the value 'F' or simply do not send it.   | T F
 
 |  
	| client | Information which the client must give to the server. It is organized 
                in the form of subfields f, t, q, m (for example: client=^fMyForm^tMyTextArea^qcurto^mF). 
                The subfields have the following meanings: ^f: name of the FORM of the client
 ^t: name of the TEXTAREA of the client
 ^u: name of the second TEXTAREA of the client, in case 
                there is one (if not, do not include this subfield)
 ^a: string that must be returned in front of the descriptor. If 
                this string is a subfield tag, for instance subfield i, put \^i 
                in this subfield a
 ^b: string that must be returned in front of the qualifier. If 
                this string is a subfield tag, for instance subfield j, put \^j 
                in this subfield b
 ^q: informs how the qualifiers must be returned
 ^m: decides if the Descriptor Language selection will be shown 
                to the user
 ^n: decides if the buttons to add on the screen (which the list 
                box contains) will be shown to the user
 Note: In order to obtain a list box with all the 
                Publication Types, choose the task alphabetic_index and 
                put, as the search expression search_exp the value _t
 Similarly, for obtaining a list with the Check-tags, make 
                a task=alphabetic_index and search_exp=_p
 | ^f: ^t:
 ^u:
 ^a:
 ^b:
 
 ^q:
 extenso (long form), ex: analysis
 curto (short form), ex: anal
 código (code form), ex: AN
 
 ^m:
 T  
		F
 
 ^n:
 T  
		F
 
 |  |