7 2EG $j$j****..P.P.P.`.p..(.x*</& /F/\*/*Crystal Drawing Program Menu Descriptions for Bravais 1.0 T.H. Kosel 11/14/89 File Menu Save Saves the crystal structure, including basis, cell shape, and centering. Lines (tetrahedra) are not saved in the current version. Recall Retrieves a stored crystal structure, including basis, cell shape, and centering. In the current version, lines (tetrahedra) are not deleted when you recall another structure, but since tetrahedra are saved in Cartesian coordinates, they don't change when you cell shape by retrieving another structure. Print Hit "L" key for LaserWriter, "I" key for ImageWriter. Enter a scale factor other than 1 to increase or decrease size of drawing from that on the screen. The drawing printed will be the same as that given by the "redraw" command in the Orientation menu. Quit As usual. Crystal Menu Centering Select primitive, base (A, B, or C type), body (interior) or face centering. This is independent of the basis or cell shape. New Basis Define a new basis group using the Basis Dialog box. The basis is independent of centering and cell shape. First enter the number of atoms in the basis. In the dialog box, you can use the tab key to go from one edit field to the next. For instance, you can click on the "u" coordinate field, enter a value, then tab to the "v" and "w" fields. You can use the up/down buttons to go back and forth through the list of basis atoms to change them. Whenever you hit an up or down button, the current contents of the edit fields for that atom are saved. Hitting return key or clicking "finished" button defines the basis with the values previously entered. You can edit it later with the Edit Basis option. The atom diameter is the lowermost field in the dialog box. It is given in pixels, while the cell lattice parameters are given in normalized values, with 1.0 corresponding to a cell edge of 140 pixels on Mac Plus or SE. The default atom diameter of 0.14 (140) is a reasonable size for pictorial representation for a basis with just one or two atoms. Note that changes of atom diameter are recorded but do not appear as changes of the atom displayed unless you either click on a new pattern or use the up/down buttons and then return to the atom in question. Note that you can rescale all atoms at once later with the Rescale Atoms option. Edit Basis Permits redefinition of the pattern, diameter, and coordinates of the atoms of the basis, but does not allow you to increase the number of atoms in the basis. Also read notes in Show Basis option. Cell Shape Changes cell size and shape. Size is in normalized units; 1.0 = 140 pixels on Mac Plus or SE. Enter C for cubic, H for hexagonal or G for any other crystal system. Then enter c/a ratio for hexagonal (a is assumed = 1.0), or a,b,c and a,b,g for a general system. Color Use this option only if you have a color screen. On a black-and-white screen, the Basis Dialog Box will be too large and have mostly black patterns. Black & White Automatically selected on a Mac Plus or SE. Can be selected with a color Mac. Outline Draws a black outline around the atoms. Show Basis Shows only the basis group in the cell. Because of the way the program decides which atoms are inside the cell, it subtracts 1/2 from indices which are greater than 1/2. This may be a little confusing to the user, since the originally entered basis coordinates are automatically altered. When you select Show Basis, some atoms may be shown outside the unit cell. Probably a future version will not revise the basis for you. Show all atoms This shows the result of adding the basis group to every Bravais lattice point, including atoms outside the cell which are not normally shown. This is to help you see the association of the basis group with each Bravais lattice point. Rescale atoms Scale all atoms up or down in size by the same factor. Hide atoms Shows a list on the screen of the atoms of the basis, with their uvw coordinates, size, and appearance. Click on any line to cause that basis atom to be hidden in the drawing. Click again to reinstate it in the list. The current version will go off screen with a basis of over 13 atoms - needs to be fixed. Orientation Menu Mouse Select crystal viewing direction with the mouse using the stereo projection circle at the left. It is in Cartesian coordinates with the standard 001 orientation; [001] is at the center, [100] at the bottom, and [010] at the right. Hold the mouse button down and drag it to see the crystal rotate. Hit any key to go back to menu. Coordinates are automatically chosen so that z axis of Cartesian system is vertical on the screen. Cartesian hkl Select any viewing direction by its Cartesian indices, e.g. [100], [110], [111] etc. Crystal hkl Select any viewing direction by its Crystal indices. Redraw Redraw the current drawing - if it has been obliterated by a print dialog box etc. Axes On/Off Shows the Cartesian x,y,z axes for reference for noncubic crystals. The x axis is always parallel to the crystal a axis, and the b axis lies in the x-y Cartesian plane. Print [hkl] Shows the present [hkl] viewing direction on the screen or printer so it can be returned to later by using the Crystal hkl orientation option. Lines Menu Tetrahedra Allows the user to define one or more tetrahedra connecting atom centers. First, define the tetrahedron orientation by clicking on any corner of the cell; the tetrahedron orientation is drawn inside the cell. (Choose a cell corner which corresponds to a visible corner of the tetrahedron of atoms you are trying to connect.) You are next asked to enter the tetrahedron size - as a fraction of the cell size. The three common sizes are 1.0, 0.5 and 0.25. The cell is redrawn showing the new size of tetrahedron, still connected to the cell corner you originally clicked on. Now you are prompted to click on an atom in the cell. It should be at the corner corresponding to the one you clicked on originally; for instance, if you clicked on the top/right/front corner of the cell, you should click on the top/right/front corner of the group you want to connect with lines. The new tetrahedron is now drawn. If it is wrong, hit any key other than "Y" and you can try again. Show lines Select this to show or hide the construction lines you have defined. This item is checked if lines are currently being shown, and is unchecked if they are not. Remove lines This removes all your construction lines permanently from memory. If you want to see them again later, use the Show Lines option instead to hide them temporarily.  CrystalView105/91 Copy to Clipboard Copies the current drawing to the clipboard so it can be pasted into drawing or word processing applications, or into the Scrapbook. As usual; returns you to the finder.Show Rotate Menu About [hkl] *NZ`%%+7DO & 1      @ Kip=HJYO[>L  $k@ @Y*:ENOPZ[`%%&+67DEOF % & 1       ? @ K˺˩˩˺˺˺v˺ !#xhL&G !CxhL&G! xhL&G! xhL&G! xhL&G! xhL&G! xhL&G! xhL&G. K<=HJKYNO[>?L޼ުޙޙުވޙޙzzuzz !xh&G ! xhL&G! xhL&G! xhL&G! xhL&G !"xhL&G! xhL&G! xhL&G.%$$$%%%&?&@&M&˹! xhL&G! xhL&G! xhL&G !xh&G o1o1*o2 tG 888 8 Rotates the specified number of degrees about the [hkl] axis you specify. Useful for checking for n-fold proper rotation axes. About x Rotates continuously about the current horzontal axis, by the number of degrees you specify per step. Useful for visualization. Hit any key to stop rotation. About y Rotates continuously about the current vertical axis, by the number of degrees you specify per step. Useful for visualization. Hit any key to stop rotation. Continuously Rotates continuously about the [hkl] axis you specify, by the number of degrees you specify per step. Useful for visualization. Hit any key to stop rotation. @H -:LaserWriter ((RRR.9IKMQ5 G M $j$$$$$$$%\%w%%%%%%%%%&&!&-&>&?&@&L&M&N&m&r&w&&&&&&@*R@ RP*>IRST^_d"#))*=Z g h v 89JKQhiu[\ghsHITDEMR! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !C! ! ! ! ! !#! ! ! ! ! ! ! ! ! ! ! ! ! ! !"! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !  & K& &tHH(FG(HH(d'@=/pR@H -:LaserWriter ((.9IKMQ)*<.5CDELM(_z)5FGPQR5 G M$k%5 $j$$$$$$$%\%w%%%%%%%%%&&!&-&>&?&@&L&M&N&m&r&w&&&&&