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|  | **LookupMode** | **BYTE** |

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The **LookupMode **property sets the //expected //data distribution the StepStringClass object implements. This, plus the //actual //data distribution, ultimately determines how "far" the indicator (scrollbar thumb or progress bar) actually moves as records are processed.

The Init method sets the value of the LookupMode property.

**Implementation:**

Valid data distribution options are U.S. surnames, English alphabet, and runtime data distribution calculated from the poles of the actual data. Corresponding LookupMode EQUATEs are declared in ABBROWSE.INC as follows:

** ITEMIZE,PRE(ScrollBy)**

**Name    EQUATE  !U.S. surnames distribution**

**Alpha   EQUATE  !English alphabet distribution**

**Runtime EQUATE  !calculate distribution from runtime poles**

** END**

The U.S. surnames and English alphabet data distributions are defined in ABBROWSE.CLW as follows:

**Scroll:Alpha STRING('  AFANATB BFBNBTC CFCNCT'|**

**          &'D DFDNDTE EFENETF FFFNFT'|**

**          &'G GFGNGTH HFHNHTI IFINIT'|**

**          &'J JFJNJTK KFKNKTL LFLNLT'|**

**          &'M MFMNMTN NFNNNTO OFONOT'|**

**          &'P PFPNPTQ QNR RFRNRTS SF'|**

**          &'SNSTT TFTNTTU UFUNUTV VF'|**

**          &'VNVTW WFWNWTX XFXNXTY YF'|**

**          &'YNYTZ ZN')**

**Scroll:Name  STRING('   ALBAMEARNBAKBATBENBIABOBBRA'|**

**          &'BROBUACACCARCENCHRCOECONCORCRU'|**

**          &'DASDELDIADONDURELDEVEFELFISFLO'|**

**          &'FREFUTGARGIBGOLGOSGREGUTHAMHEM'|**

**          &'HOBHOTINGJASJONKAGKEAKIRKORKYO'|**

**          &'LATLEOLIGLOUMACMAQMARMAUMCKMER'|**

**          &'MILMONMORNATNOLOKEPAGPAUPETPIN'|**

**          &'PORPULRAUREYROBROSRUBSALSCASCH'|**

**          &'SCRSHASIGSKISNASOUSTESTISUNTAY'|**

**          &'TIRTUCVANWACWASWEIWIEWIMWOLYOR')**

**See Also:**     [[init  initialize the stepstringclass object .htm|Init]]